The next version of Microsoft Office will feature new Fluent Design experiences

Microsoft is bringing its Fluent Design experience to the next version of Microsoft Office desktop apps and the web.A leaked video on Twitter has today unveiled a bunch of new design changes coming soon to Microsoft's Office suite of apps and Office Web, which feature Fluent Design elements in the ribbon UI and more.
The two minute video briefly showcases improved design experiences in the Office Web Portal, as well as Word Online, which now features subtle animations when switching between tabs in the ribbon, as well as a much cleaner UI that looks and feels a lot more like an actual app.